sky background

Measurement of antenna gain using background temperature of sky as standard of calibration

用冷空作为定标基准测天线增益

This stunning shot shows the towers'reflections against the salmon pink sky, with the periwinkle haze of the Sierra Nevada Mountains in the background.

这张极好的照片显示了反衬在橙红色天空里的钙华塔，背景是内华达山脉里玫瑰色的薄雾。

According to the difference of grayness distributing between sea background and sky background, a method of sea-sky background segmentation based on row mean value has been raised.

在分析海空背景图像海背景和天空背景灰度分布差异的基础上，提出了基于行均值的海空背景分割算法；

Based on the results of the contrast of star to sky background in daytime, the detectable stellar magnitude limits are computed and analyzed as functions of observing heights, solar zeniths angle, wavebands and stellar spectral types for 3 °× 3 ° field of view.

根据恒星和白天大气背景辐射的对比度，计算和分析了3°×3°视场下，可探测星等极限值随观测高度、太阳天顶角、波段和恒星光谱类型的变化情况。

After nine years of scanning the sky, the Wilkinson Microwave Anisotropy Probe ( WMAP) space mission has concluded its observations of the cosmic microwave background, the oldest light in the universe.

经过9年对天际的扫描，威尔金森各向异性微波探头（WMAP）航天任务得出了对宇宙微波背景辐射（及宇宙早期“光线”）的观测结论。

This stunning shot shows the towers' reflections against the salmon pink sky, with the periwinkle haze of the Sierra Nevada Mountains in the background.

A Soft Sunset柔和的日落这张极好的照片显示了反衬在橙红色天空里的钙华塔，背景是内华达山脉里玫瑰色的薄雾。

Moving Target Detection in Cloudy Sky Background

云天背景下的运动目标检测

Those photons are still running loose, detectable as the cosmic microwave background, a microwave glow from all parts of the sky.

这时光子的运动仍然是无规则的，以宇宙背景辐射的形式存在就是从宇宙的各个部分发出的微波。

Fundamental analysis of atmospheric transmission sky background radiance is carried out, height is regarded as the key factor.

对大气透过率和天空背景辐射进行了初步分析，指出高度为其最主要影响因素。

Real-time Detection Algorithm Infrared Ship Target Under Complex Sea-sky Background

复杂海天背景下红外舰船目标实时检测算法

Pure classic craft, ivory archaize cupboard door, shallow wooden-grain top line, lamp line and decoration column and sky orange background, colour is harmonious.

纯古典工艺，乳白色仿古柜门，浅木纹顶线、灯线及装饰柱与天空橙背景，色彩和谐。

The default background for Microsoft's Windows XP operating system--a perfect blue sky full of cotton-candy clouds above rolling hills with impeccably trimmed grass and daffodils--is the spring day we wish could last forever.

微软公司（Microsoft）Windows XP操作系统的默认背景是一副春日景象――湛蓝的天空上漂浮着棉花糖般的朵朵白云，绿草茵茵、水仙成簇的山丘连绵起伏――真希望这幅景象可以一直持续下去。

Theoretical calculation of the radiance of the infrared sea and sky background radiation

红外海天背景辐射亮度的理论计算

In this picture from the 2009 Geminid shower, a bright meteor with a greenish tinge flashes through the sky over the Mojave Desert near Barstow, California, USA. Recognizable in the background are bright stars in the northern asterism known as the Big Dipper, framing the meteor streak.

在这张2009年的双子座流星雨图片上，一条绿色的光尾在接近美国加利福尼亚州巴斯托的巴莫哈韦沙漠闪烁着划过，背景是明亮的北斗七星群。这种情景简称流星连胜。

The experimental results show that the proposed algorithm for dynamic cloud simulation screen display smooth, simple and fast, efficient and real time features, to meet the needs the dynamic sky background of certain game scene.

通过实验证明，本文所提出的动态云模拟算法画面显示流畅，简单快速、效率高，实时性强的特点，可以满足游戏场景等动态天空背景的需要。